package org.example.library_management_system.Interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import org.example.library_management_system.Model.UserInfo;
import org.example.library_management_system.constant.Constants;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;


@Component
@Slf4j
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        log.info("preHandle ...");

        HttpSession session = request.getSession(true);//默认是true
        UserInfo userInfo =(UserInfo) session.getAttribute(Constants.USER_NAME);
        log.info("拦截器中Userinfo：{}",userInfo);
        if(userInfo==null || userInfo.getUserName()==null){
            response.setStatus(401);
            return false;
        }

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

        log.info("postHandle ...");
    }
}
